1921] 



NATURAL SCIENCES OF PHILADELPHIA. 431 



Figs. 10, 11. — Oliva gradata Gabb. Paratype and type. 



Fig. 12.— Rictaxis oryza (Gabb). Type. Length 6.7 mm. 



Fig. 13. — Harpa americana n. sp. Type. 



Fig. 14. — ■Marginella sowerhyi Gabb. Type. 



Fig. 15. — -Adeon subtornatilis Pils. & Johns. Type. 



Plate XXIV. — Fig. 1. — Mitra symmetrica Gahh. Type {= titan Gabb). Length 

 51 mm. 

 Fig. 2. — Mitra titan Gabb. Type. Length 106 mm. 

 Fig. 3. — Mitra longa Gabb. Type. Length 61.3 mm. 

 Figs. 4, 5. — Mitra rudis Gabb. Type and a young specimen. 

 Fig. 6. — Plochelwa crassilahrum Gabb. Type. 



Fig. 7 .—Plochelo'.a gabbi Pils. & Johns. Type. Length 27.5 mm. 

 Fig. 8. — Vexillum tortuosmn (Gabb). Type. Length 32.3 mm. 

 Fig. 9. — Vexillum tortuosellum (Pils. & Johns.). Type. 

 Fig. 10. — Mitra mesolia Pils. & Johns. Type. 

 Fig. 11, 12. — Lyria soror (Sowerby). 



Fig. 13. — Vexillum tortuosellum frater (Pils. & Johns.). Type. 

 Fig. 14. — Marginella nugax Pils. & Johns. Type. 



Plate XXV. — ^Fig. 1. — Latirofusus exilis (Gabb). Length 31.4 mm. 



Fig. 2. — Cardium venustum Gabb. Type. 



Fig. 3. — Xancus validus (Sowb.). Length 178 mm. 



Fig. 4. — Lalirus hrevicaudatus santodomingensis P. Length 57 mm. 



Fig. 5. — Xancus textilis jamaicensis Pils. & Johns. Length 123 mm. 



Fig. 6. — Xancus textilis jamaicensis. Length 42 mm. 



Fig. 7. — Cardium uenustum Gabb. Type. 



Fig. 8, 9. — Cardium dominicense Gabb. Type. 



Plate XXVL' — Fig. \.- Latirus angustatus Gahh. Length 27 mm. 

 Fig. 2. — Latirus fusifarmis Gabb. Length 31.5 mm. 

 Fig. 3. — Latirus fusif or mis Gabb. Length 28.7 mm. 

 Fig. 4. — Latirus elongatus Gabb. Length 49 mm. 

 Fig. 5. — Xancus rex Pils. & Johns. Length 220 mm. 

 Figs. 6, 7. — ■Fusinus henekeni (Sowb.). Lengths 71 and 89 mm. 

 Fig. 8. — Xancus rex Pils. & Johns. Length 156 mm. 

 Fig. 9. — Leucozonia rhomboidea Gabb. Length 13.6 mm. 



Plate XXVII. — Fig. 1. — Vasum pugnus Pils. & Johns. Length 80 mm. 

 Figs. 2, 3. — Vasum tuberculatum Gabb. Length 112 mm. 

 Figs. 4, 5. — Vasum dominicense Gabb. Lengths 32 and 60 mm. 

 Fig. 6. — Aclis alta Gabb. Type. 



Plate XXVIII. — -Fig. 1. — Murex rufus fo»i/>aditsGabb. Type. Length 56.4 mm. 

 Figs. 2, 3. — Trophon dominicensis Gabb. Type. Length 17.5 mm. 

 Fig. 4. — Murex textilis Gabb. Type. Length 31 mm. 

 Figs. 5, 6. — Typhis obesris Gabb. Type. Length 24.8 mm. 

 Fig. 7. — Muricidea striata Gabb. Type Length 12.3 mm. 

 Figs. 8, 9. — Thais santodomingensis Pils. & Johns. Tjq^e. Length 45 mm. 

 Fig. 10. — Melongena antillaruni (Gabb). Young paratype. Length 43.7 mm. 

 Figs. 11, 12. Cymia henekeni tectiformis n. subsp. Type. Length 46 mm. 

 Figs. 13, 14. — Melongena orthacantha Pils. & Johns. Type. Length 29.6 mm. 

 Figs. 15, 16. — -Melongena orthacantha Pils. & Johns. Adult paratype. Length 



36.4 mm. 

 Fig. 17. — Melongena antillarum Gabb. Type. Length 79 mm. 



Plate XXIX. — -Figs. 1, 9.—Malea goliath Pils. & Johns. Type. Length 129 mm. 

 Fig. 2. — Cymatiam domingense (Gabb). Type. Length 28.7 mm. 

 Fig. 3. — Malea elliptica Pils. & Johns. Type. Length 53.5 mm. 

 Fig. 4, 5. — Bursa crassa proavus Pils. Length 25 mm. 

 Figs. 6, 7. — Potamides dentilabris (Gabb). Length 49.6 mm. 

 Fig. 8. — Bursa crassa bowdenensis Pils. Length 48.7 mm. 



